2012 Lexus HS250h remote start

468
4-3. Do-it-yourself maintenance
HS250h_U_75050U
■Use a CR1632 lithium battery
●Batteries can be purchased at your Lexus dealer, local electrical appliance
shops or camera stores.
●Replace only with the same or equivalent type recommended by the manufac-
turer.
●Dispose of used batteries according to local laws.
■When the card key battery needs to be replaced (if equipped)
The battery for the card key is available only at Lexus dealers. Your Lexus dealer
can replace the battery for you.
■If the electronic key battery is depleted
The following symptoms may occur:
●The smart access system with push-button start and wireless remote control will
not function properly.
●The operational range will be reduced.
CAUTION
■Removed battery and other parts
Keep away from children. These parts are small and if swallowed by a child, they can
cause choking. Failure to do so could result in death or serious injury.
NOTICE
■For normal operation after replacing the battery
Observe the following precautions to prevent accidents:
●Always work with dry hands.
Moisture may cause the battery to rust.
●Do not touch or move any other components inside the remote control.
●Do not bend either of the battery terminals.

544
5-2. Steps to take in an emergency
HS250h_U_75050U
If the electronic key does not operate properly
Locking and unlocking the doors, unlocking the trunk and key linked functions
DoorsUse the mechanical key (→P. 4 2 )
in order to perform the following
operations (driver’s door only):
Locks all the doors
Closes the windows and moon
roof (turn and hold)
*
Unlocks the door
Turning the key rearward unlocks
the driver's door. Turning the key
once again unlocks the other
doors.
Opens the windows and moon
roof (turn and hold)
*
*: This setting must be customized at your Lexus dealer.
If communication between the electronic key and vehicle is interrupted
(→ P. 52) or the electronic key cannot be used because the battery is
depleted, the smart access system with push-button start and wireless
remote control cannot be used. In such cases, the doors and trunk can be
opened and the hybrid system can be started by following the procedure
below.

587
6-2. Customization
6
Vehicle specifications
HS250h_U_75050U
Door lock
(
→P. 6 1 ,
544)
Opening
driver’s door
unlocks all doors
OffOnO—OO
Smart
access sys-
tem with
push-button
start and
wireless
remote con-
trol
(
→P. 4 7 ,
58)
Operation signal
(Emergency
flashers)
OnOffO—OO
Open door
warning buzzerOnOff———O
Operation signal
(buzzer volume)Level 7OFF to level 6O—OO
Ti m e e l a p s e d
before the auto-
matic door lock
function is acti-
vated if a door is
not opened after
being unlocked
60 sec-
onds
Off
O—OO
30 sec-onds
120 sec- onds
Smart
access sys-
tem with
push-button
start
(
→P. 4 7 )
Smart door
unlockingDriver’s doorAll the doorsO—OO
Smart access
system with
push-button
start
OnOffO—OO
Number of con-
secutive door
lock operations
2 timesAs many as desired———O
ItemFunctionDefault settingCustom-
ized
setting

625
HS250h_U_75050U
What to do if...
What to do if...
A tire puncturesP. 5 3 2If you have a flat tire
The hybrid system does not start
P. 5 4 1If the hybrid system will not start
P. 1 0 1Immobilizer system
P. 5 4 7If the vehicle 12-volt battery is dis-
charged
The engine coolant temperature
warning light flashes or come on
Steam can be seen coming
from under the hood
P. 552If your vehicle overheats
The key is lostP. 5 4 3If you lose your keys
The 12-volt battery runs outP. 5 4 7If the vehicle 12-volt battery is dis-
charged
The doors cannot be locked
P. 4 7Smart access system with push-button start
P. 5 8Wireless remote control
P. 6 1Doors
The horn begins to soundP. 1 0 3Alarm
The vehicle is stuck in mud or
sandP. 556If the vehicle becomes stuck
A warning light or indicator
light comes onP. 5 0 2If a warning light turns on or a warning
buzzer sounds...